Add support for llvm.uadd.with.overflow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59926 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index c115710..d24c846 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -4168,13 +4168,16 @@
break;
}
- case ISD::SADDO: {
+ case ISD::SADDO:
+ case ISD::UADDO: {
SDValue LHS = LegalizeOp(Node->getOperand(0));
SDValue RHS = LegalizeOp(Node->getOperand(1));
SDValue Sum = DAG.getNode(ISD::ADD, LHS.getValueType(), LHS, RHS);
MVT OType = SDValue(Node, 1).getValueType();
- SDValue Cmp = DAG.getSetCC(OType, Sum, LHS, ISD::SETLT);
+ SDValue Cmp = DAG.getSetCC(OType, Sum, LHS,
+ (Node->getOpcode() == ISD::SADDO) ?
+ ISD::SETLT : ISD::SETULT);
MVT ValueVTs[] = { LHS.getValueType(), OType };
SDValue Ops[] = { Sum, Cmp };
@@ -4185,9 +4188,6 @@
DAG.ReplaceAllUsesOfValueWith(SDValue(Node, 1), SDValue(RNode, 1));
break;
}
- case ISD::UADDO: {
- break;
- }
}
assert(Result.getValueType() == Op.getValueType() &&